Final review of the kingdoms and their defining characteristics.
a. The criterion of prokaryotic vs. eukaryotic cell structure separates Monera from all other kingdoms.
b. The criterion of unicellular vs. multicellular organization helps separate Protista from Fungi, Plantae, and Animalia.
c. The criterion of mode of nutrition separates the heterotrophic Fungi and Animalia from the autotrophic Plantae.
d. The criterion of cell wall presence separates Animalia from Plantae and Fungi.
e. The Five Kingdom system is considered phylogenetic as it is based on evolutionary relationships.
f. The earlier Two Kingdom system failed because it did not consider mode of nutrition and cell structure.
g. Viruses, viroids, and prions are not included in this system because they are acellular.
